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24635 (1981 EN42)
Classification: Main-belt Asteroid          SPK-ID: 2024635
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1658741735604276 3.01e-08  
a 2.219652408671391 6.2088e-09 au
q 1.851469399791612 6.6998e-08 au
i 1.092170475226977 3.89e-06 deg
node 207.2265061218689 0.00017013 deg
peri 80.43635820641548 0.00017058 deg
M 278.3912991032533 1.2123e-05 deg
tp 2459474.316645928002
(2021-Sep-16.81664593)
4.0715e-05 TDB
period 1207.885819170177
3.31
5.068e-06
1.388e-08
d
yr
n .2980414160730205 1.2505e-09 deg/d
Q 2.587835417551171 7.2387e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1465  
   data-arc span      14648 days (40.10 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50427  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:35:56  

Additional Information
 Earth MOID = .833553 au 
 Jupiter MOID = 2.56397 au 
 T_jup = 3.632 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.52   n/a MPCxxxxx  

24635 (1981 EN42)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EN42 = 1995 SH55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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